Portable optical disk storage device



FIG. 1 is a reduced top front right side perspective view of a portable optical disk storage device showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a right side elevational view thereof; and

FIG. 7 is a left side elevational view thereof.

The cords are shown broken away in the views to indicate indeterminate length. 

The ornamental design for a portable optical disk storage device, as shown and described. 